mirror of
https://github.com/golang/go
synced 2024-11-22 15:04:52 -07:00
47 lines
879 B
Go
47 lines
879 B
Go
package main
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import (
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"flag"
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"log"
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"net/http"
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"text/template"
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)
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var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
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var templ = template.Must(template.New("qr").Parse(templateStr))
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func main() {
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flag.Parse()
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http.Handle("/", http.HandlerFunc(QR))
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err := http.ListenAndServe(*addr, nil)
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if err != nil {
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log.Fatal("ListenAndServe:", err)
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}
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}
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func QR(w http.ResponseWriter, req *http.Request) {
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templ.Execute(w, req.FormValue("s"))
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}
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const templateStr = `
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<html>
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<head>
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<title>QR Link Generator</title>
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</head>
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<body>
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{{if .}}
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<img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{urlquery .}}" />
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<br>
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{{html .}}
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<br>
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<br>
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{{end}}
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<form action="/" name=f method="GET"><input maxLength=1024 size=70
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name=s value="" title="Text to QR Encode"><input type=submit
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value="Show QR" name=qr>
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</form>
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</body>
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</html>
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`
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